/*
 * Copyright 2012-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.assertj.tests.guava.api;

import static java.lang.String.format;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.catchThrowable;
import static org.assertj.core.util.FailureMessages.actualIsNull;
import static org.assertj.guava.api.Assertions.assertThat;

import com.google.common.collect.HashMultiset;
import com.google.common.collect.Multiset;
import org.junit.jupiter.api.Test;

public class MultisetAssert_contains_Test {

  @Test
  public void should_fail_if_actual_is_null() {
    // GIVEN
    Multiset<String> actual = null;
    // WHEN
    Throwable throwable = catchThrowable(() -> assertThat(actual).contains(1, "test"));
    // THEN
    assertThat(throwable).isInstanceOf(AssertionError.class)
                         .hasMessage(actualIsNull());
  }

  @Test
  public void should_fail_if_expected_is_negative() {
    // GIVEN
    Multiset<String> actual = HashMultiset.create();
    // WHEN
    Throwable throwable = catchThrowable(() -> assertThat(actual).contains(-1, "test"));
    // THEN
    assertThat(throwable).isInstanceOf(IllegalArgumentException.class)
                         .hasMessage("The expected count should not be negative.");
  }

  @Test
  public void should_fail_if_actual_contains_value_fewer_times_than_expected() {
    // GIVEN
    Multiset<String> actual = HashMultiset.create();
    actual.add("test", 2);
    // WHEN
    Throwable throwable = catchThrowable(() -> assertThat(actual).contains(3, "test"));
    // THEN
    assertThat(throwable).isInstanceOf(AssertionError.class)
                         .hasMessage(format("%nExpecting:%n" +
                                            "  [\"test\", \"test\"]%n" +
                                            "to contain:%n" +
                                            "  \"test\"%n" +
                                            "exactly 3 times but was found 2 times."));
  }

  @Test
  public void should_pass_if_actual_contains_value_number_of_times_expected() {
    // GIVEN
    Multiset<String> actual = HashMultiset.create();
    actual.add("test", 2);
    // THEN
    assertThat(actual).contains(2, "test");
  }

  @Test
  public void should_fail_if_actual_contains_value_more_times_than_expected() {
    // GIVEN
    Multiset<String> actual = HashMultiset.create();
    actual.add("test", 2);
    // WHEN
    Throwable throwable = catchThrowable(() -> assertThat(actual).contains(1, "test"));
    // THEN
    assertThat(throwable).isInstanceOf(AssertionError.class)
                         .hasMessage(format("%nExpecting:%n" +
                                            "  [\"test\", \"test\"]%n" +
                                            "to contain:%n" +
                                            "  \"test\"%n" +
                                            "exactly 1 times but was found 2 times."));
  }

  @Test
  public void should_work_with_filtering() {
    // GIVEN
    Multiset<String> actual = HashMultiset.create();
    actual.add("test", 2);
    // THEN
    assertThat(actual).filteredOn(s -> s.startsWith("t"))
                      .contains(2, "test");
  }
}
